Semtech SX9210 Smart Proximity Sensor for Wearables

Semtech SX9210 Smart Proximity Sensor for Wearables is a capacitive controller that uses up to 3 capacitive sensor inputs. This sensor can use any of the three sensor inputs along with the Smart Sense Engine for features like in-ear detection, on-table detection, and proximity detection. The SX9210 sensor comes with the ability to intelligently turn the power on/off, play/pause, and change volume. This sensor includes an on-chip auto-calibration controller that performs sensitivity adjustments to maintain peak performance over a wide variation of temperature, humidity, and noise environments. This sensor is used in wearable and hearable applications where package size and power consumption are of special importance.

Features

  • Up to 3 capacitive sensor inputs:
    • Patented smart sense engine
    • Capacitance resolution down to 0.008fF
    • Capacitance offset compensation up to 75pF
    • Advanced temperature compensation
  • Automatic calibration
  • Ultra-low power consumption:
    • Active mode: 22µA
    • Doze mode: 6µA
    • Sleep mode: 1.75µA
  • 400kHz I2C serial interface:
    • 2 sub-addresses selectable by pin
  • Programmable interrupt or real-time status pin
  • Two reset sources:
    • POR and soft reset
  • -40°C to 85°C operating temperature range
  • Compact size:
    • 0.92mm x 1.69mm WLCSP package

Videos

Typical Application Circuit

Application Circuit Diagram - Semtech SX9210 Smart Proximity Sensor for Wearables

Semtech SX9210 Smart Proximity Sensor for Wearables